And why were the early "post" 2 door much more popular among racers.... Yep, that's why... the post created structural rigidity.
Torque boxes are like tits on a boar.... band aid on a cut artery.A cheap, minimally effective, easy to install on the assembly line improvement of the original design. Nothing more. They do the EXACT same thing that a connector does except over a smaller area. They apply load to a greater contact patch.
Even 13-15 second cars can benefit from frame connectors. Just because Mopar didn't do it doesn't discount the benefits of connectors. Drive a car before and after, close the doors before and after (especially if the front rear are on opposing slopes), the cars feel more solid and responsive when driven.
Any potential drawbacks are killed in spades by the benefits. End of story.
